Piston and a fluid-actuated working cylinder provided therewith

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United States of America Patent

PATENT NO 11821444
APP PUB NO 20220397132A1
SERIAL NO

17838330

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A piston for a fluid-actuated working cylinder, with a piston base unit which is coaxial to a piston longitudinal axis, consisting of a rigid core body which has radial outer peripheral surface and of an annular filling body which is seated in an annular receiving groove. The receiving groove is coaxial to the piston longitudinal axis and in the region of the radial outer peripheral surface is designed with a radially outwardly facing groove opening in the core body. The piston further includes a ring element which consists of plastic. The ring element radially outwardly coaxially encompasses the piston base unit at least in the region of the filling body, being radially supported with a radial inner peripheral surface on the piston base unit, projecting radially beyond the radial outer peripheral surface of the core body and comprising an axially orientated axial support surface radially outside the piston base unit on its two axial face sides. The piston further includes an annular enveloping body which has rubber elastic characteristics.

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Patent Owner(s)

Patent OwnerAddress
FESTO SE & CO KG73734 ESSLINGEN

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bartolic, Nenad Böblingen, DE 1 0
Rau, Michael Hattenhofen, DE 9 44
Widmayer, Stephan Spiesen-Elversberg, DE 2 0

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